Book/Report

FZJ-2016-02855

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Untersuchungen zur Verringerung der Freisetzung fester Spaltprodukte aus beschichteten Brennstoffteilchen durch Zusätze hochschmelzender Oxide zum Brennstoffkern

Förthmann, R.FZJ* ; Hamesch, M.FZJ* ; Nickel, H.FZJ*

1972
Kernforschungsanlage Jülich, Verlag Jülich

Please use a persistent id in citations: http://hdl.handle.net/2128/11352

Report No.: Juel-0846-RW

Abstract: For increasing the retention of solid fission products in coated fuel particles, investigations are made on oxide fuel kernels containing special refractory oxides, e.g. Al$_{2}$O$_{3}$. It is the aim of this work to test the possibility of retaining solid fission products in the kernel by formation of stable ternary oxides. Using the Hydrolysis Process, U0$_{2}$ and (U,Th) O$_{2}$ kernels are prepared which contain the solid fission products Sr, Ba, Ce in concentrations corresponding to a burnup of about 10 % fima. After an out-of-pile heat treatment of these kernels of the fission product release is measured. The Sr release at 1250 °C is found tobe smaller by a factor 20 to 100 if the kernels contain Al$_{2}$O$_{3}$ in amounts of 1 to 5 weight percent. The solid fission products are enriched in the inclusions of Al$_{2}$O$_{3}$ which is not soluble in the UO$_{2}$ matrix of the kernel.

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Contributing Institute(s):

1. Publikationen vor 2000 (PRE-2000 ; Retrocat)

Research Program(s):

1. 899 - ohne Topic (POF3-899) (POF3-899)

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